Mail File Viewer vs UPCLabelMaker

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

Mail File Viewer compared with UPCLabelMaker
Detail	Mail File Viewer	UPCLabelMaker
What it does	Read email files privately in your browser with no upload	Generate GS1-compliant UPC, EAN, and Amazon FNSKU barcode labels online
Stage	Not given	Not given
Founded	Not given	Not given
Based in	Not given	Not given
Pricing model	Free	Freemium
Pricing	Not given	Free: Single PNG/SVG barcodes with no account or watermark, plus 3 free full-sheet PDFs on sign-up. Pro: $9/month (or $79/year, approximately $6.58/month with 2 months free) for unlimited calibrated barcode label sheets, CSV/multi-SKU import, and saved batch archive. One-off sheet packs: Starter Pac
Key features	Read winmail.dat and EML files in browser View embedded images safely Preview PDF attachments Download attachments individually or as ZIP No file uploads to server Display sender, date and message content	UPC-A barcode generation with automatic check digit, SKU and price fields Amazon FNSKU labels with X00 code and product title for FBA EAN-13 international barcode labels with guard bars and quiet zones GS1 DataMatrix 2D codes with expiration dates and lot numbers Thermal label sheets calibrated for Zebra, Rollo, and Dymo printers CSV and multi-SKU batch import for bulk label creation Avery 5160/8160 30-up and Avery 5163 10-up calibrated PDFs and Word templates Alignment test PDFs to verify print settings Check digit calculator for UPC-A, EAN-13, and GTIN-14 validation Cloud-based saved batch archive for re-downloading old label batches
What makes it different	All processing happens in your browser with no uploads Private handling of email attachments Outlook hides Safe display of external images with user permission	Calibrated to exact physical dimensions of US Letter sheets and thermal rolls with no manual scaling needed Single PNG/SVG barcodes are always free with no account or watermark required Blank templates and alignment tests provided free for all label formats Mix multiple SKUs on one sheet with custom quantities One-off sheet packs never expire and can be used anytime
Community votes	0	0
DR (Domain Rating by Ahrefs)	Not checked yet no change since last check	Not checked yet no change since last check
Trust Flow (Majestic)	2	0
Citation Flow (Majestic)	19	0
Referring domains (Majestic)	6	0

4 details filled in for both companies.

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